Back-end Developer jobs in Windsor, Berkshire

Role: Back End Engineer – Python Location: London | Hybrid 2 days in office (Tuesday & Thursday) Package: Up to £70,000 + 10% Bonus + Private Medical + 8% Pension Join a well-established and fast-growing digital tech team within a major automotive services organisation. Originally launched as a startup, the business has evolved into a key player in the automotive retail and finance space,...

Lead Software Engineer London-based or Remote within the UK (no visa sponsorship) We’re working with a mission-driven energy tech start-up that’s reimagining how power is monitored, billed and delivered. Backed by angel investors, my client is building digital tools that support modern energy infrastructure in markets underserved by traditional utilities. This is a founding role. As the Lead...

We're a UK based, profitable and fast growing company that began as a small bootstrapped AI startup in 2023. Nowadays, we're a relatively small team (10) of talented individuals located in London, Brighton and Bratislava. In a period of significant growth, we're looking for another talented engineer to help us scale further and allow the company to help even more job seekers save time by...

You will be a key player in designing, developing, and maintaining critical backend services. Your expertise in JavaScript and Spring Boot will be essential for creating robust RESTful APIs and event-driven microservices deployed on AWS. We are looking for a developer who is passionate about embedding security, observability, and automation directly into the development lifecycle.

You will be working on improving and maintaining our existing platform, however their will also be the opportunity to support work on our modernisation initiative; to rebuild the platform with a new microservices architecture.

Backend Engineer (Kotlin) – Hybrid (London) – Up to £95k 💰 Join a fast-growing cleantech company as a Backend Kotlin Engineer that is driving the global shift to clean, affordable energy through an integrated hardware and software smart-grid platform focused on residential EV charging. By leveraging data, AI, and strong industry partnerships, they connect cars, chargers, people, and energy...

🚀 Senior Backend Software Engineer – London (Hybrid) | Equity + Competitive Salary Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We’re building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical...

· Hands-on experience and proficiency with C# .Net specifically Azure Cloud usage. · Databases: Azure Cosmos DB, Snowflake, Azure Data Factory · Cloud Services: Azure - Azure Functions, Service Bus, Azure Storage, Key Vault · CI/CD: Azure DevOps · Solid understanding of software development methodologies. · Knowledge of RESTful APIs and microservices architecture. · Strong understanding of...

Backend Software Engineer – Python / FastAPI / Event Driven Architecture Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution at a time, this system enables users to generate, visualise, and explore...

Senior Backend Engineer | Fully Remote | Full Time Are you a seasoned backend engineer with a passion for building scalable APIs and robust backend systems? We’re looking for a Senior Backend Engineer to join our development team and help shape the future of our platform. What You’ll Do - Design, develop, and maintain high-quality APIs and backend services - Architect scalable software...

Backend Web Developer This is an initial Fixed-term Contract (6-12 months) with the view to make it permanent. Location: Fully Remote (UK) Salary: £38,000 - £48,000 (DOE) The role: We enjoy making the complex simple for our clients. We create websites, campaigns and digital products for professional services clients, arts, fashion, and e-retailers. You’ll be joining an experienced,...

Go Backend Engineer (Data Platform & APIs) - Northern Ireland (Remote-first) * Salary: £75,000-£150,000 + bonus + benefits About the Company: Our client is scaling an ML-driven data and analytics platform and modernizing their engineering standards. Their current stack includes Python, GoLang, TensorFlow, PyTorch, AWS, and Kubernetes, with a focus on building scalable, ML-driven data and...

Leading Sustainable E-Commerce | 35 Million Users | Mid & Senior Back End Engineers | TypeScript/Node/AWS | Up to £100K + Bonus | REMOTE (UK) or 1 Day Per Week (LDN) Company Our client is an extremely well known, digital marketplace focused on sustainable ecommerce. With over 35 million of active users globally, they’re redefining how people buy and sell second-hand fashion, aiming to make the...

Senior TypeScript Back-End Engineer – £80,000–£100,000 + Bonus | Hybrid — 3 days/week in London My client helps private clinics reduce patient anxiety and affordability barriers by pairing educational treatment content with an embedded finance solution — so more people can access the care they need. Backed by a purpose-driven B-Corp, they combine the stability and industry expertise of an...

You will join a small, high-calibre engineering team at the start of a brand-new project. The team is building a next-generation platform that handles large-scale, multi-tenant, geospatial and graph-based data in a secure cloud environment.

You will be instrumental in defining architecture patterns, integrating geospatial data sources, and working with modern cloud-native technologies.

You will work alongside a cross-functional team of backend engineers, product managers and data scientists to deliver high-quality, scalable, and reliable solutions that meet the needs of their customers.

Title: Back-End Engineer Location: London (Hybrid) Salary: Up to £115,000 + Exceptional Bonuses/Benefits Client: Gen AI Start-Up The Opportunity: The firm is looking for a sharp, experienced Back-End Engineer to join a high-calibre engineering team building next-generation, AI-driven software. You’ll help turn AI-generated code into robust, usable applications that connect seamlessly via...

About Aero A digital experience company, we sit at the intersection of insights, creativity and technology, crafting digital experiences that transform business performance. We’re a small, fully remote team with big ambitions. We work hands-on with our clients, giving our teams genuine ownership of their work. Every project you touch will be seen by thousands of people and will directly...

Back End Engineer (Python) Location: London (hybrid) Salary: Up to £70,000 (depending on experience) +10% bonus We’re looking for a talented Back End Engineer to join a growing engineering team based in central London. You’ll play a key role in building and maintaining scalable backend services that power customer-facing platforms used across the UK. This is a great opportunity to work on...

Cutting Edge Fintech Start-Up | Senior Full Stack (Back End Leaning) | £90K+Equity | 2 Day PW LDN Company I am excited to be working with an early-stage start-up that is developing a SaaS platform designed to modernise private equity transactions by streamlining manual and complex workflows through scalable, reliable software. Founded by experienced industry professionals, the company’s goal...